question_answer 42)

  Major source of mineral in soil is the (a) parent rock from which soil is formed              (b) plants                             (c) animals                                                                          (d) bacteria

Answer:

  (a) The physical and chemical weathering of rocks is the process involved in formation of soil. Rocks are the naturally occurring soil aggregates of one or more minerals or mineralogist. For example common granite is combination of quartz, feldspar and biotitic minerals.